@Article{fdmp.2020.09681,
AUTHOR = {Bin Wang, Jing Zheng, Yuanyuan Yu, Runmin Lv, Changyue Xu},
TITLE = {Shock-Wave/Rail-Fasteners Interaction for Two Rocket Sleds in the Supersonic Flow Regime},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {16},
YEAR = {2020},
NUMBER = {4},
PAGES = {675--684},
URL = {http://www.techscience.com/fdmp/v16n4/39814},
ISSN = {1555-2578},
ABSTRACT = {Rocket sleds belong to a category of large-scale test platforms running
on the ground. The applications can be found in many fields, such as aerospace
engineering, conventional weapons, and civil high-tech products. In the present
work, shock-wave/rail-fasteners interaction is investigated numerically when the
rocket sled is in supersonic flow conditions. Two typical rocket sled models are
considered, i.e., an anti-D shaped version of the rocket sled and an axisymmetric
slender-body variant. The dynamics for Mach number 2 have been simulated in
the framework of a dynamic mesh method. The emerging shock waves can be
categorized as head-shock, tailing-shock and reflected-shock. An unsteady
large-scale vortex and related shock dynamics have been found for the anti-D
shaped rocket sled. However, a quasi-steady flow state exists for the slender-body
shaped rocket sled. It indicates that the axisymmetric geometry is more suitable
for the effective production of rocket sleds. With the help of power spectral density analysis, we have also determined the characteristic frequencies related to
shock-wave/rail-fasteners interaction. Furthermore, a harmonic phenomenon has
been revealed, which is intimately related to a shock wave reflection mechanism.},
DOI = {10.32604/fdmp.2020.09681}
}